Operations Specification 617 -- Instructions
SUBJECT: INSTRUCTION SHEET - LAND AND HOLD SHORT OPERATIONS
NOTE to inspectors: LASHO does not require an operations specification (ops spec) in Canada. This document is issued to Canadian air operators conducting LAHSO operations outside of Canada as an administrative document to serve as the basis on which a foreign authority will issue their own ops spec to a Canadian air operator.
CANADIAN AVIATION REGULATIONS
3. This operations specification is issued pursuant to:
Specify the particular regulation:
4. Subject to the restriction(s) referred to in section 4 of this operations specification, the reference number(s) for the appropriate aircraft type(s) as listed in part II of this air operator certificate are:
The aeroplane types entry are from the pick list.
5. This authorization is limited to the following specific series and/or specific aircraft registration(s), if applicable:
Specify the applicable restriction(s) to the type(s) authorizes in section 4;
Ex.: Applicable to DHC8-400 only.
Ex.: Applicable to C-FXXX and C-GYYY only.
Ex.: Applicable to all 001, 003, 004, and 005 only to C-FXXX and C-GYYY.
The following conditions are applicable for wet runway operations:
(i) no Group 6 aircraft shall be instructed to hold short of an intersecting runway;
(ii) stopping distances for Group 1, 2 and 3 aircraft are increased by 15% (see Note); and
(iii) the coefficient of friction on LAHSO runways must meet a minimum standard. The coefficient of friction will be measured in accordance with Airport Pavement Evaluation—Surface Friction (AK 68 35 000/TP 3716); only those runways with average coefficients of friction above 0.6 will be approved for wet runway LAHSO.
NOTE: Aircraft are categorized into groups requiring the following stopping distances:
|Dry Runway||Wet Runway|
|Group 1||1 650 ft||1 900 ft|
|Group 2||3 000 ft||3 500 ft|
|Group 3||4 500 ft||5 200 ft|
|Group 4||6 000 ft||6 000 ft|
|Group 5||8 000 ft||8 000 ft|
|Group 6||8 400 ft||8 400 ft|
These stopping distances are based on ISA conditions for sea-level runways. For higher airport elevations, the distances are adjusted for pressure altitude. An aircraft’s grouping is such that its normal stopping distance is approximately 50% of the available stopping distance.